3
0.
one sigma and one and half pi bonds
only 1.
8 sigma bonds and 1 pi bond.
Every double bond has one pi bond and one sigma bond. There are five double bonds in acetylsalicylic acid, so there are five pi bonds.
3
Epinephrine or also known as adrenaline contains 6 pi bonds. Epinephrine is a naturally occurring hormone that is also commercially manufactured for use as heart stimulant.
O=O One of these double bonds is a sigma and the other is a pi bond. So, one pi bond is the answer.
Remember there are many forms of cumulene. In a cumulene that forms like this H2C=C=C=C=CH2 there are 7 sigma bonds and 3 pi. When there is a double bond ( = ) one is always a sigma bond the other is pi, single bonds are sigma.
There are 7 sigma bonds, 3 pi bonds in Cumulene.
39 sigma and 6 pi bonds